Thought that was neat and to me this is avant-garde ..and shares similarities with your description eventhough certainly no people or arms or ballet
if you ask me
Whether someone wants to call something this or that or avant-garde or not
I don't think it matters
Seems you just have a certain word on your tongue you cant spit out so hopefully gets it

You're most likely correct. I'm assuming that if I can determine the name associated with this style, I might be able to locate some of the photographers associated with the style. It may have no name at all, and I'll have to seek out individual images first, and then their creators.